openpilot is an open source driver assistance system. openpilot performs the functions of Automated Lane Centering and Adaptive Cruise Control for over 200 supported car makes and models.

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#!/usr/bin/env python
import sys
import time
from tools.zookeeper import Zookeeper
# Usage: check_consumption.py <averaging_time_sec> <max_average_power_W>
# Exit code: 0 -> passed
# 1 -> failed
if __name__ == "__main__":
z = Zookeeper()
duration = None
if len(sys.argv) > 1:
duration = int(sys.argv[1])
try:
start_time = time.monotonic()
measurements = []
while duration is None or time.monotonic() - start_time < duration:
p = z.read_power()
print(round(p, 3), "W")
measurements.append(p)
time.sleep(0.25)
except KeyboardInterrupt:
pass
finally:
average_power = sum(measurements)/len(measurements)
print(f"Average power: {round(average_power, 4)}W")